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Finding the Fourth Proportional to 68.60, 101.97 and 66.44

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Solution

The fourth proportional to 68.60, 101.97 and 66.44 is: 98.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.60 : 101.97 = 66.44 : x
  2. Step 2: Convert to fraction form
    68.60/101.97 = 66.44/x
  3. Step 3: Cross multiply
    68.60x = 101.97 × 66.44
  4. Step 4: Simplify right side
    68.60x = 6,774.89
  5. Step 5: Solve for x
    x = 6,774.89/68.60
  6. Step 6: Final answer
    x = 98.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.